Permanent vs Fixed-Term Employment Contract: Complete Comparison

The question of choosing between a permanent employment contract (CDI) and a fixed-term contract (CDD) is one of the most frequent in French employment law. For the employer, this choice determines the legal structure of the employment relationship, administrative obligations and litigation risks. For the employee, it determines job security, entitlement to compensation and career prospects. In 2025, according to DARES, more than 87% of hirings in France are made on fixed-term contracts, but the permanent contract remains the reference standard of the Labour Code. This article offers you an exhaustive comparison of the two contractual forms, their respective legal frameworks, termination conditions and issues related to dematerialisation.

The Permanent Employment Contract (CDI): the reference standard

In French law, the permanent contract is defined by article L. 1221-2 of the Labour Code as the normal and general form of employment relationship. It does not provide for a termination date and can theoretically last throughout the employee's career. Its termination is only possible under strictly regulated conditions.

The fundamental characteristics of the permanent contract

A permanent contract may be concluded without particular formality for a full-time contract, but drawing up a written agreement is strongly recommended — and mandatory for part-time contracts (article L. 3123-6 of the Labour Code). It may be full-time or part-time, with or without a probationary period (whose duration varies depending on the professional category: 2 months for workers and employees, 3 months for supervisory staff and technicians, 4 months for managers, in accordance with article L. 1221-19).

An employer wishing to terminate a permanent contract must follow a strict procedure: summons to a preliminary meeting, a reflection period, written notification of the decision, and payment of legal severance compensation after one year of service (article L. 1234-9). In the case of a mutual termination agreement (article L. 1237-11 to L. 1237-16), the parties must obtain approval from the DREETS.

The part-time permanent contract: specific points to know

A part-time permanent contract requires a minimum of 24 hours per week, unless a collective agreement provides otherwise or the employee requests it in writing for personal reasons. The contract must specify the distribution of working hours, the conditions for modifying this distribution and the limits applicable to additional hours. Any breach exposes the employer to reclassification of the contract as full-time, with significant financial consequences. To automate the generation and signing of these sensitive documents, HR teams can rely on the electronic signature solution dedicated to human resources offered by Certyneo.

The Fixed-Term Employment Contract (CDD): a limited exception

Unlike the permanent contract, the fixed-term contract is an exceptional contract: it may only be concluded in the cases strictly provided for by law (article L. 1242-2 of the Labour Code). Its misuse exposes the employer to judicial reclassification as a permanent contract, accompanied by damages.

Legal grounds for using a fixed-term contract

The authorised cases for use are as follows:

• Replacement of an absent employee (illness, maternity leave, parental leave, etc.)

• Temporary increase in company activity

• Seasonal employment in expressly defined sectors

• Contracts of common practice in certain sectors (audiovisual, entertainment, teaching, hospitality and catering) where it is customary not to use permanent contracts

• Recruitment of unemployed persons facing particular employment insertion difficulties (subsidised contracts)

Article L. 1242-1 of the Labour Code sets out the general prohibition: "A fixed-term contract, regardless of its purpose, may neither be intended nor have the effect of permanently filling a position linked to the normal and permanent activity of the company."

Maximum duration, renewal and notice period

The maximum duration of a fixed-term contract varies depending on the reason: 18 months as a general rule, 9 months for awaiting the start date of an employee recruited on a permanent contract or urgent work, 24 months for an exceptional export order or a contract executed abroad (article L. 1242-8). The fixed-term contract may be renewed twice, up to its maximum duration. At the end of the contract, a notice period must be observed before resorting to a new fixed-term contract for the same position: one third of the contract duration if it exceeds 14 days, half its duration in other cases (article L. 1244-3).

End-of-contract compensation and fixed-term employee rights

At the normal end of a fixed-term contract, the employee receives a precariousness allowance equal to 10% of the total gross remuneration received during the contract (article L. 1243-8), reduced to 6% if a collective agreement provides for trade-offs in terms of training. A fixed-term employee benefits from the same rights as a permanent employee (paid leave, meal vouchers, access to collective facilities, equal pay for equivalent work) by virtue of the equal treatment principle.

Comparison table permanent/fixed-term: the decisive criteria

To quickly visualise the differences between permanent and fixed-term employment contracts, here are the essential criteria:

| Criterion | Permanent | Fixed-Term | |---|---|---| | Duration | Unlimited | Limited (max. 18 to 24 months depending on reason) | | Formality | Written agreement recommended (mandatory for part-time) | Written agreement mandatory, delivered within 2 working days | | Probationary period | Yes (variable duration) | Yes (limited to 1 day/week, max. 2 weeks if ≤ 6 months; 1 month if > 6 months) | | Early termination | Dismissal or resignation with safeguards | Limited cases only (gross misconduct, mutual agreement, unfitness) | | End compensation | Legal severance (if termination by employer) | Precariousness allowance 10% | | Renewal | N/A | 2 times, within the maximum duration |

Electronic signature of employment contracts: issues and best practices

Since Ordinance No. 2016-131 of 10 February 2016 reforming contract law, and in accordance with eIDAS Regulation No. 910/2014, electronic signature is fully recognised for employment contracts. The Court of Cassation has confirmed that electronic writing has the same probative force as paper, provided that the signatory's identity can be properly identified and the document's integrity is guaranteed.

What level of signature should be chosen for an employment contract?

The eIDAS regulation distinguishes three levels of electronic signature:

• Simple electronic signature (SES): sufficient for many common acts, but offering limited traceability.

• Advanced electronic signature (AES): recommended for employment contracts, as it links the signature to an identified signatory and detects any subsequent modification to the document.

• Qualified electronic signature (QES): the highest level, legally equivalent to handwritten signature in the EU; required for certain notarial or administrative acts.

For permanent and fixed-term contracts, advanced electronic signature is the recommended market standard according to legal doctrine and the most advanced HR practices. For more information on choosing the right level, consult our complete guide to electronic signature.

Operational benefits of dematerialisation

Electronic signature of employment contracts brings measurable benefits: reduction of signing time from several days to a few hours, elimination of printing, postage and paper filing costs, unforgeable time-stamped traceability, and facilitation of remote working or international recruitment. Companies using eIDAS-compliant platforms report a reduction of 60 to 80% in administrative time related to contract management, according to sector studies published by specialised HR transformation firms.

To compare available solutions on the market before making your choice, our comparison of electronic signature solutions presents the essential technical and pricing criteria. Furthermore, if your company is already using a competing tool, our offer to migrate to Certyneo supports you without service interruption.

Reclassification as permanent: risks to anticipate

The major issue with fixed-term contracts remains the risk of judicial reclassification as a permanent contract before the Employment Tribunal. This risk materialises in several situations:

• Lack of written agreement: the fixed-term contract must be delivered to the employee within two working days following hiring (article L. 1242-13); otherwise, it is deemed to be permanent.

• Unlawful or imprecise reason: recourse to temporary increase in activity must be substantiated and dated; vague wording is sufficient to trigger reclassification.

• Exceeding the maximum duration: any excess, even of one day, automatically results in reclassification.

• Non-compliance with the notice period: linking two fixed-term contracts without respecting the legal period is penalised.

In case of reclassification, the employer is exposed to payment of a reclassification allowance (at least one month's salary), possible salary arrears, and depending on the situation, damages for wrongful termination of the permanent contract so reclassified. Electronic signature, through certified time-stamping, constitutes irrefutable proof of the contract delivery date, significantly reducing this procedural risk. To understand compliance mechanisms related to the eIDAS regulation, our guide on eIDAS Regulation 2.0 details the applicable technical and legal requirements.

Applicable legal framework for employment contracts and their signature

Employment law: fundamental texts

The legal framework of the permanent and fixed-term employment contract is based mainly on the provisions of the Labour Code, in particular:

• Article L. 1221-2: enshrines the permanent contract as the normal form of employment relationship.

• Articles L. 1242-1 to L. 1248-11: define the conditions of validity, authorised grounds, maximum duration, renewal, notice period and penalties applicable to fixed-term contracts.

• Article L. 1243-8: sets the precariousness allowance at 10% of total gross remuneration.

• Article L. 1242-13: requires delivery of the written fixed-term contract within two working days.

• Articles L. 1237-11 to L. 1237-16: govern the mutual termination agreement of the permanent contract.

• Article L. 3123-6: makes writing mandatory for any part-time contract.

Legal recognition of electronic signature

The probative value of electronic signature is established by several convergent texts:

• Article 1366 of the Civil Code: "Electronic writing has the same probative force as writing on paper, provided that the person from whom it originates can be properly identified and that it is established and maintained under conditions such as to guarantee its integrity."

• Article 1367 of the Civil Code: "The signature necessary for the completion of a legal act identifies its author. It manifests his consent to the obligations arising from that act. When it is affixed by a public officer, it confers authenticity on the deed. When it is electronic, it consists in the use of a reliable identification procedure guaranteeing its link with the deed to which it is attached."

• eIDAS Regulation No. 910/2014 of the European Parliament and of the Council of 23 July 2014 on electronic identification and trust services: defines the three levels of signature (simple, advanced, qualified) and their legal value in Member States. Qualified electronic signature benefits from a legal presumption of authenticity.

• Ordinance No. 2016-131 of 10 February 2016: incorporated into the Civil Code full and complete recognition of electronic writing and electronic signature.

Personal data protection

The collection and processing of personal data of signatories (identity, email address, time-stamp) in the context of electronic signature of employment contracts are subject to the General Data Protection Regulation (GDPR) No. 2016/679. The employer, as data controller, must in particular:

• Have a legal basis (contract performance, article 6.1.b of GDPR)

• Inform the employee (article 13 of GDPR)

• Guarantee data security and their limited retention over time

• Conclude a compliant data processing agreement (article 28) with the electronic signature service provider

Qualified trust service providers must also comply with the requirements of standards ETSI EN 319 132 (XAdES format) and ETSI EN 319 122 (CAdES format) for the creation of advanced and qualified electronic signatures, ensuring interoperability and longevity of digital evidence.

Use cases: permanent contracts, fixed-term contracts and electronic signature in practice

Scenario 1 — An industrial SME managing several hundred fixed-term seasonal contracts per year

An 80-employee SME operating in the agrifood sector recruits approximately 250 seasonal staff between April and September each year. Previously, managing fixed-term contracts involved printing, postal dispatch, telephone follow-up and manual filing of each contract. The average time for returning a signed contract was 4 to 7 working days, regularly creating situations where employees were in position without a signed contract — a major source of legal risk.

By deploying an advanced electronic signature solution compliant with eIDAS, the SME reduced this time to less than 2 hours on average. Contract delivery is automatically time-stamped, satisfying the requirement of article L. 1242-13 of the Labour Code. The rate of contentious reclassification for failure to deliver within the deadline has been reduced to zero. Estimated time saving: 3 FTE-weeks per seasonal recruitment campaign, representing a reduction of about 70% of HR administrative time devoted to this task.

Scenario 2 — A digital transformation consulting firm recruiting senior profiles on permanent contracts

A 40-consultant consulting firm recruits between 15 and 25 managers per year, often remotely or from abroad. Electronic signature of permanent contracts — including non-compete clause, confidentiality agreement and variable remuneration schedule — allows finalising the contractual relationship in less than a day, regardless of the future employee's time zone.

The firm noted a 40% reduction in the withdrawal rate between accepted offer and actual signature, by shortening the window of uncertainty. The electronic audit trail (access logs, IP, time-stamp of each signature) also constitutes robust evidence in case of dispute over contract content or acceptance date. The AI contract generator integrated into the Certyneo platform, accessible via the AI contract generator, also allows personalising manager permanent contract templates in a few minutes.

Scenario 3 — A hospital group managing frequent replacements

A hospital group of approximately 1,200 beds regularly employs doctors and nurses on fixed-term replacement contracts, sometimes for durations of 24 to 72 hours. The operational constraint is extreme: the contract must be signed before starting work, within timeframes incompatible with postal dispatch or even physical travel.

The implementation of mobile electronic signature (via link sent by SMS or email) enabled the HR department to have replacement contracts signed in less than 15 minutes, even outside working hours. GDPR compliance is ensured by processing data on servers hosted in the European Union. The annual assessment shows savings of €8,000 in postage and printing costs, and an 85% reduction in disputes related to the absence of a written contract at the start of a shift.

Conclusion

The choice between a permanent employment contract and a fixed-term contract is not simply a question of comfort or flexibility: it entails precise legal obligations, employee rights and significant litigation risks for the employer if formalities are not respected. The permanent contract remains the reference standard of French employment law, whilst the fixed-term contract, subject to strict conditions, must be used with rigour.

In this context, electronic signature constitutes a major lever for legal security and operational efficiency: it guarantees traceability of contract delivery, reduces signing times and protects the company in case of litigation. Certyneo supports you in dematerialising all your HR contracts, in full compliance with the eIDAS regulation and GDPR.

👉 Discover Certyneo pricing and start signing your employment contracts electronically today.